Manny PacquiaoSticking It to Marquez with Post-Fight Song

11/13/2011 9:00 AM PST

Manny Pacquiao -- Sticking It to Marquez with Post-Fight Song

It wasn't enough for Manny Pacquaio to beat Juan Manuel Marquez in a close decision last night in Las Vegas -- later on in the evening, Manny took the stage at the House of Blues and performed "La Bamba" ... perhaps the most famous song from Marquez's native Mexico.